EP3229720B1 - Stereotactic surgical instrument - Google Patents

Stereotactic surgical instrument Download PDF

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Publication number
EP3229720B1
EP3229720B1 EP14820818.4A EP14820818A EP3229720B1 EP 3229720 B1 EP3229720 B1 EP 3229720B1 EP 14820818 A EP14820818 A EP 14820818A EP 3229720 B1 EP3229720 B1 EP 3229720B1
Authority
EP
European Patent Office
Prior art keywords
support member
coupling
head frame
ridge
clamp element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14820818.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3229720A1 (en
Inventor
Markus Nyman
Erik Rurling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elekta AB
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Elekta AB
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Filing date
Publication date
Application filed by Elekta AB filed Critical Elekta AB
Publication of EP3229720A1 publication Critical patent/EP3229720A1/en
Application granted granted Critical
Publication of EP3229720B1 publication Critical patent/EP3229720B1/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/10—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges for stereotaxic surgery, e.g. frame-based stereotaxis
    • A61B90/11—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges for stereotaxic surgery, e.g. frame-based stereotaxis with guides for needles or instruments, e.g. arcuate slides or ball joints
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00477—Coupling

Definitions

  • the present invention relates to the field of stereotactical therapy and surgery.
  • the invention concerns a stereotactic surgical instrument for use in stereotactical therapy and surgery and a coupling mechanism for such an instrument.
  • stereotactic guidance is employed by a physician to reach a target site.
  • Stereotactic guidance is generally defined as the ability to locate and access an object in a three-dimensional space.
  • surgical delivery by an instrument is often guided by use of three-dimensional scanning technique such as computed tomography (CT) or magnetic resonance imaging (MRI).
  • CT computed tomography
  • MRI magnetic resonance imaging
  • stereotactic procedures require the use of a stereotactic head frame, which is generally referred to as a frame-based stereotaxy procedure.
  • a typical stereotactic head frame is a halo-like or ring-like device that is rigidly affixed to the patient's skull by means of pins or screws.
  • a semi-circular arc for holding an instrument is attached to the head frame.
  • the head frame When the head frame is fixed or secured, the head frame is used to define a target and a trajectory to the target. This can be achieved, for example, with use of CT or MRI images.
  • the head frame may also be used as a guide for delivering various types of instruments, such as a biopsy needle or DBS (Deep Brain Stimulation) leads or electrodes.
  • DBS Deep Brain Stimulation
  • the head frame and arc In order to correct positioning and adjustment of the head frame and the semi-circular arc, the head frame and arc typically include graduations or indentations that are scaled to provide separate discreet movements along the scale of the head frame and arc. This requires knowledge and long experience by the user.
  • the target and trajectory adjustments and positioning is manually adjusted via adjustment knobs arranged on the head frame and these manual adjustments of the various scales to adjust the x, y, and z coordinates, as well as the rotations about these coordinates for targeting and trajectory are susceptible for human error and are time consuming.
  • the steps of attaching the arc to the support members of the head frame and adjusting the x coordinate after attachment of the arc to the head frame via the support members are difficult and cumbersome and also require experience and are therefore time consuming and susceptible for human error.
  • US 4 592 352 A discloses a stereotactic surgical instrument including a semi-circular arc part and a head frame, wherein the arc part comprises coupling members shaped as rings for attaching and locking the arc part to the head frame.
  • An object of the present invention is to provide a stereotactic surgical instrument where the mounting or attachment of the arc to the support members of the head frame is facilitated.
  • Another object of the present invention is to provide a stereotactic surgical instrument that is accurate and precise in line with the high demands on tolerance and precision in a surgical and clinical environment.
  • a stereotactic surgical instrument including a semi-circular arc part and a head frame, wherein the head frame is arranged for fixation to a head of a patient by means of pins or screws, wherein the arc part comprises coupling members shaped as rings arranged at a fixed distance from each other for attaching and locking the arc part to the head frame, wherein the head frame comprises support members formed as rings for receiving corresponding coupling members, wherein each coupling member includes a pivotable clamp element arranged to partly surround a respective support member circumferentially when the arc part is coupled to the head frame, and wherein the coupling members includes locking elements arranged to receive a tip portion of the respective clamp element and adjustable locking knobs for tightening and locking respective coupling member to respective support member.
  • a coupling mechanism for coupling or attaching a semi-circular arc part rigidly to a head frame of a stereotactic surgical instrument for use in stereotactic surgery, wherein the head frame is arranged for fixation to a head of a patient by means of pins or screws, wherein the arc part comprises coupling members shaped as rings arranged at a fixed distance from each other for locking the arc part to the head frame, wherein the head frame comprises support members formed as rings for receiving corresponding coupling members, wherein each coupling member includes a pivotable clamp element arranged to partly surround a respective support member circumferentially when the arc part is coupled to the head frame, and wherein the coupling members includes locking elements arranged to receive a tip portion of the respective clamp element and adjustable locking knobs for tightening and locking respective coupling member to respective support member.
  • the present invention is based on the idea that mounting and adjustment of an arc part of a stereotactic surgical instrument to a head frame of the stereotactic surgical instrument, where the head frame is fixed to patient's head, can be significantly facilitated by providing a support members on the head frame and corresponding coupling members on the art fixed relative each other. That is, the coupling members of the arc part and the support members of the head frame are arranged at fixed X-coordinate. Thereby, the need of adjusting the X-coordinate after the arc is attached to the head frame is eliminated.
  • the new and inventive coupling mechanism of according to the present invention including ring-like support members arranged on the head frame and corresponding ring-like coupling members of the arc part that allows a connection between these ring-like members by a radial sliding along corresponding ring planes.
  • the coupling members comprise pivotable clamp element, for example, shaped as semi-circles or rings designed to co-operate with and partly surround a respective support member circumferentially when the arc part is coupled to the head frame. This facilitates to connection of the art to the head frame.
  • each pivotable clamp element comprises a nose part arranged to co-operate with a respective support member so as to close the clamp element about the support member when pressed against each other.
  • the nose part is provided with a curved section to co-operate with the corresponding support member.
  • the curved section co-operates with a guiding section or step of the corresponding support member.
  • each support member comprises a guiding part formed as a circular projecting part extending in a circumferential direction on an outer surface of the support member, wherein the guiding part is arranged to receive the nose part of a respective coupling member.
  • the guiding part includes a circular ridge extending in a circumferential direction, wherein said ridge comprises an oblique section, and a recess extending in the circumferential direction.
  • the clamp element includes a circular ridge extending in a circumferential direction, wherein said ridge comprises an oblique section, and a recess extending in the circumferential direction.
  • the ridge and recess of the clamp element are arranged to mate with corresponding with recess and ridge of the support member.
  • the arc part comprises two coupling members fixated to the arc part at a fixed distance from each other.
  • the pivotable clamp element is spring biased.
  • the present invention for use in stereotactic surgery may be utilized for any type of neurological procedure or instrument, including biopsy needles, cannulas, catheters, implants guide wires, needles and styles and may also be used for delivery of electricity, drugs, genes or cells, as well as for ablation of, for example, vascular blockage or tumors or any other neurological intervention in the brain.
  • DBS deep brain stimulation
  • the stereotactic system 10 may include an optional imaging device 12 that is used to acquire images, e.g. in real-time or pre-operative, of the patient 14.
  • the imaging device 12 may include a MRI imaging system and/or a CT imaging system.
  • the imaging system 12 may be controlled by a user from a controller, computer or work station 16 having a display 18 and a user interface 20.
  • the work station 16 provides facilities for displaying on the display 18, saving, digitally manipulating, or printing a hard-copy of, for example, images from the imaging device 12 and from the pre-operative scans.
  • the user interface 20 may be a mouse, a keyboard, touch pen, touch screen or other suitable device that allows a physician or user to provide inputs to control the imaging device 12.
  • a stereotactic surgical instrument 23 is used for the invasive procedure including a stereotactic head frame 24 fixed to the patient's head and a semi-circular arc part 31 for holding the surgical instrument.
  • the arc part 31 is attached to the head frame 24 in a fixed position relative the head frame 24 and the patient 14.
  • the stereotactic head frame 24, as schematically shown in Fig. 2 , is usually fixed to the patient's 14 scull or head 15 via pins or screws 26.
  • the head frame 24 generally includes a ring-like structure or frame 25 for fixation to the head via the screws 26 and support members 27 for attachment of the semi-circular arc 28 (see e.g. Figs. 3a - 3c and 4 ) to the head frame 24.
  • the support members 27 of the coupling mechanism 30 are formed as rings with a guiding part, section or surface 37 formed as circular a projecting part or section having a smaller outer diameter than the ring 27 and having a circumferential extension.
  • the arc part 28 comprises coupling members 31 shaped as rings for fitting and locking the arc part 28 to the head frame 24 at the support members 27 for receiving corresponding coupling members 31.
  • Each coupling member 31 includes a pivotable clamp element 32 arranged to partly surround a respective support member 27 circumferentially when the arc part 28 is coupled to the head frame 24. This is illustrated in Figs. 3a - 3c .
  • arc part 28 is moved towards the head frame 24 such that respective coupling member 31 is aligned with corresponding support member 27.
  • a nose part 36 provided on respective clamp element 32 is arranged to co-operate with the corresponding support member 27 so as to close the clamp element 32 about the support member 27.
  • the support members 27 and the corresponding coupling member lock by sliding radially along the ring planes.
  • the clamp elements 32 close the coupling member 31.
  • the arc part 28 can be pivoted in an arc like manner relative the head frame 24 so as to adjust a rotational angle, i.e. a position of the arc part 28 relative the head frame 24.
  • the coupling members 31 are provided with a scaling in order to enable an accurate and easy adjustment of the rotational angle.
  • coupling members 31 includes locking elements 35 arranged to receive a tip portion 33 of the respective clamp element 32 and adjustable locking knobs 34 for tightening and locking respective coupling member 31 to respective support member 27. Hence, the coupling members 31 can be locked in a fixed position relative the corresponding support members 27.
  • FIG. 5 another detailed view of the support member 27 when coupled to a coupling member 31 is shown.
  • a cross-sectional view of the support member 27 and the coupling member 31 when coupled to each other is shown.
  • the guiding part 37 of the support member 27 includes a circular ridge 51 extending in a circumferential direction, wherein the ridge 51 comprises an oblique section 52, and a recess 53 extending in the circumferential direction.
  • the clamp element 32 includes a circular ridge 54 extending in a circumferential direction, wherein the ridge 54 comprises an oblique section 55, and a recess 56 extending in the circumferential direction.
  • the ridge 54 and recess 56 of the clamp element 32 are arranged to mate with corresponding with recess 53 and ridge 51 of the support member 27.

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Pathology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Surgical Instruments (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
EP14820818.4A 2014-12-12 2014-12-15 Stereotactic surgical instrument Active EP3229720B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201462091382P 2014-12-12 2014-12-12
PCT/EP2014/077817 WO2016091337A1 (en) 2014-12-12 2014-12-15 Stereotactic surgical instrument

Publications (2)

Publication Number Publication Date
EP3229720A1 EP3229720A1 (en) 2017-10-18
EP3229720B1 true EP3229720B1 (en) 2018-08-29

Family

ID=52232165

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14820818.4A Active EP3229720B1 (en) 2014-12-12 2014-12-15 Stereotactic surgical instrument

Country Status (5)

Country Link
US (1) US10245109B2 (zh)
EP (1) EP3229720B1 (zh)
JP (1) JP6382450B2 (zh)
CN (1) CN107106255B (zh)
WO (1) WO2016091337A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018116196A1 (en) 2016-12-24 2018-06-28 Javad Hasani Bidgoli A device for brain biopsy
DE102019200591B4 (de) 2019-01-17 2022-02-24 Siemens Healthcare Gmbh Schädelklemmvorrichtung zur Fixierung und Ausrichtung eines Kopfes eines Patienten für einen medizinischen Eingriff und medizinisches Bildgebungssystem
CN110448801A (zh) * 2019-08-16 2019-11-15 昆明医科大学第一附属医院 一种帕金森治疗系统和方法
CN113679405B (zh) * 2021-08-27 2023-10-20 吉林大学 一种虚拟头颅模型自然头位的定位装置及其定位方法

Family Cites Families (19)

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JPH0310969Y2 (zh) * 1984-10-19 1991-03-18
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SE8701719D0 (sv) * 1987-04-27 1987-04-27 Elekta Instr Ab Sett att markera ett operationsstelle och anordning for utforande av settet
AU645535B2 (en) * 1989-11-27 1994-01-20 Bard International, Inc. Puncture guide for computer tomography
US5163430A (en) * 1990-04-27 1992-11-17 Medco, Inc. Method and apparatus for performing stereotactic surgery
US5330485A (en) * 1991-11-01 1994-07-19 Clayman David A Cerebral instrument guide frame and procedures utilizing it
US5665095A (en) * 1994-12-15 1997-09-09 Jacobson; Robert E. Stereotactic guidance device
US5984930A (en) * 1996-09-30 1999-11-16 George S. Allen Biopsy guide
CN2406623Y (zh) * 2000-01-27 2000-11-22 陈国强 多功能颅脑立体定向手术装置
US7366561B2 (en) * 2000-04-07 2008-04-29 Medtronic, Inc. Robotic trajectory guide
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CA2426453A1 (en) * 2000-08-08 2002-02-14 Sdgi Holdings, Inc. (D/B/A Medtronic Sofamor Danek, Inc.) Improved method and apparatus for stereotactic implantation
US7674270B2 (en) * 2002-05-02 2010-03-09 Laparocision, Inc Apparatus for positioning a medical instrument
WO2003092518A1 (en) * 2002-05-02 2003-11-13 Gmp Surgical Solutions, Inc. Apparatus for positioning a medical instrument relative to a patient
US7313430B2 (en) * 2003-08-28 2007-12-25 Medtronic Navigation, Inc. Method and apparatus for performing stereotactic surgery
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GB0905352D0 (en) * 2009-03-30 2009-05-13 Barking Havering And Redbridge Device
EP2732777B1 (en) * 2012-11-14 2015-09-16 Biedermann Technologies GmbH & Co. KG Targeting device for guiding a drill arrangement

Also Published As

Publication number Publication date
EP3229720A1 (en) 2017-10-18
JP2017538499A (ja) 2017-12-28
CN107106255B (zh) 2019-04-16
WO2016091337A1 (en) 2016-06-16
JP6382450B2 (ja) 2018-08-29
CN107106255A (zh) 2017-08-29
US20160166324A1 (en) 2016-06-16
US10245109B2 (en) 2019-04-02

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